The connection between the Teager energy operator and the ambiguity function is established in this correspondence after defining the Teager operator over complex-valued signals. This relation allows the use of the Teager energy in estimating the second moment angular bandwidth and the moments of a signal duration (spread) and that of its spectrum.

We present a large (65 million words of Wall Street Journal) and in-depth corpus study of a particular syntactic ambiguity to investigate (1) to what extent the structure of a grammar is reeected in a corpus, and (2) how probability functions deened according to a grammar t independently established measures of syntactic disambiguation preference. We look at the well-known case of the ambiguity...

Following the Gulf oil spill and US housing meltdown, policymakers revamped the associated administrative infrastructure in an effort to sharpen each agency’s focus, based on the perspective that asking an organization to fulfill competing missions undermines performance. Using a formal model, I demonstrate that priority goal ambiguity introduced when an agency balances multiple roles does have...

Spurious ambiguity is the phenomenon whereby distinct derivations in grammar may assign the same structural reading, resulting in redundancy in the parse search space and inefficiency in parsing. Understanding the problem depends on identifying the essential mathematical structure of derivations. This is trivial in the case of context free grammar, where the parse structures are ordered trees; ...

Many languages allow for ”fake” uses of their past tense marker: the marker can occur in certain contexts without conveying temporal pastness. Instead it appears to bear a modal meaning. Iatridou [2000] has coined this phenomenon Fake Tense. Fake Tense is particularly common to conditional construction. This paper proposes to explain Fake Tense in English conditional sentences as a certain kind...

Quality issues and their connection with structural aspects of process models have been recently studied, but there is still a notable lack of research into quality aspects of activity labels in business process models. In this paper, we investigate whether the guideline to use verb-object labels actually contributes to improved model quality in terms of less ambiguity and higher usefulness. In...

In [2] Antonisse made a conjecture that unambiguous grammars are better candidates for grammar-guided genetic learning. In this paper, we empirically show that it is not always the case, especially when the structural ambiguity is boosted by semantic redundancies in the grammar. We also show that the search space (or genotype space) of grammar guided genetic programming (GGGP) is truly tree set...

This paper extends a polynomial-time parsing algorithm that resolves structural ambiguity in input sentences by calculating and comparing the denotations of rival constituents, given some model of the application environment (Schuler, 2001). The algorithm is extended to incorporate a full set of logical operators, including quanti ers and conjunctions, into this calculation without increasing t...

This paper reports the results of a study which re-examines Chenhall & Brownell (Accounting, Organizations and Society, pp. 225-233, 1988). In that study, it was hypothesized that role ambiguity acted as an intervening variable in the association between budgetary participation and outcome criteria. Although the results were supportive of the hypotheses, a number of limitations was observed. Th...

The current study tests a novel latent construct reflecting psychological absence and examines its relations with maternal depression, mother-toddler interactions, and toddlers' social-emotional outcomes in a low-income sample (N = 2,632). Structural equation modeling confirmed a psychological absence construct and revealed that psychological absence, measured at the child's 36-month birthday-r...